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Zephyr Solar Powered Plane



Zephyr Solar Powered Plane

Learn about a solar powered plane that could fly for months - Zephyr

solar | transport | news
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The Zephyr - Solar powered aeroplane

Powered only by PV solar panels with rechargeable battery backup, The Zephyr is an ultra-light solar powered aeroplane designed to fly as high as 25 miles for weeks or months without landing. At such heights it will fly far above most weather and the commercial air-lanes in the sky. Therefore it will potentially revolutionise communications acting as a platform far cheaper than the satellites sent into orbit today. The Zephyr was built by QinetiQ, formerly part of the UK's MOD (Ministry of Defence).

Zephyr Technical Specifications

Zephyr is a High Altitude Long Endurance (HALE) Unmanned Aerial Vehicle (UAV) made from carbon-fibre. It has a wing span of 18 metres and weighs in at just 30 kg - so light, it can be launched by hand. Propulsion is provided by two electric motor driven propellers.

Power is from an array of ultra-thin amorphous silicon solar cells (United Solar Ovonic) which cover the upper surface of the wings. During the daytime any excess generated power is used to recharge lithium-sulphur batteries (from Sion Power) which power the motors during the night.

UPDATE 10th September 2007
The Zephyr solar-powered plane has set a new (unofficial) world record for the longest duration unmanned flight - 54 hours including two full nights. This smashed the official world record of under 31 hours set in 2001 by a USAF Global Hawk surveillance aircraft.

Zephyr solar powered plane flying at 58,000 feet into the sunset

During this test flight over White Sands Missile Range in New Mexico, an altitude of 58,000 feet (18,000 metres) was achieved - similar to the cruising altitude of Concorde.

The technical director of the Zephyr project Chris Kelleher told BBC Newaa, "This aeroplane is going to go a lot higher and a lot further" and added "You ain't seen nothing yet."

Videos of Zephyr

A video the launch of the Zephyr solar powered aeroplane can be viewed here on the BBC News website: Zephyr Takeoff Video.
Article Last Modified: 15:49, 10th Sep 2007

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